Claude Code 2.1.284 Switches Default to Sonnet 5.5 with 100 Changes

Claude Code CLI 2.1.284 shipped with about 100 changes, switching the default model to Sonnet 5.5, whose pricing was revealed as $2/$10 per million input/output tokens with 1M context. Prompt tokens grew 13.2% month-over-month.

2026-09-29 ~ 2026-09-29 · 3 related posts

• Claude Code 2.1.284 ships 100 CLI changes, defaults to Sonnet 5.5 with 1M context — ClaudeCodeLog · 2026-09-29
• Sonnet 5.5 pricing revealed: 1M context, $2/$10 per Mtok, $0.20 cache reads — ClaudeCodeLog · 2026-09-29
• Claude Code 2.1.284 prompt stats: tokens up 13.2%, tools share rises to 83% — ClaudeCodeLog · 2026-09-29